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Lightmatter Principal/ Senior Photonics Design Engineer in Boston, Massachusetts

Principal/ Senior Photonics Design Engineer

Lightmatter builds chips for artificial intelligence computing. Our architecture leverages unique properties of light to enable fast and efficient inference and training engines. If you're a collaborative engineer or scientist who has a passion for innovation, solving challenging technical problems and doing impactful like building the world's first optical computers, consider joining the team at Lightmatter!

We are seeking a motivated and dedicated Principal photonics design engineer for our next-generation artificial intelligence computing architecture alongside a team of world-class scientists and engineers.

In this role, you will design, develop, build and test photonic systems that are key to our products. You will also interact with device, hardware and software design teams to assist in overall development of photonics systems; specifying, selecting and qualifying the various components necessary.

Join a tight-knit team where each individual’s contributions directly influence the success of the company and product! You'll have the opportunity to build a new kind of computer from the ground up and to solve groundbreaking challenges along the way. Work with people who love to build and who thrive in technically diverse environments where great ideas are prioritized.


  • Develop methodologies for high quality components suitable for volume production

  • Interface closely with laser and package designers to optimize performance for various form factors and operating conditions

  • Actively collaborate across disciplines—with digital, photonics, analog, and physical design teams—to design devices that meet performance and power requirements

  • Work with external vendors to ensure timely development and delivery of key photonics related processes and components

  • Work with the photonics test team in defining requirements for device characterization, debug and validation

  • Engage in problem solving and contributing with novel architectural ideas

  • Work closely with hardware and software teams on functionality, interfaces, and documentation


  • MS or PhD in EE, physics or a related discipline

  • 8+ years of experience in integrated optics

  • In-depth knowledge of photonic device physics, semiconductor laser and device physics

  • Demonstrated track record of ownership of integrated silicon photonics components

  • Experience with testing and characterization of photonic devices

  • Excellent written and verbal communication skills

  • Ability to collaborate in cross-disciplinary team

  • Demonstrate strong problem solving skills in problems that do not have obvious solutions


  • Comprehensive Health Care Plan (Medical, Dental & Vision)

  • 401k matching

  • Life Insurance (Basic, Voluntary & AD&D)

  • Generous Time Off (Vacation, Sick & Public Holidays)

  • Paid Family Leave

  • Short Term & Long Term Disability

  • Training & Development

  • Flexible, hybrid workplace model

  • Stock Option Plan

Lightmatter recruits, employs, trains, compensates and promotes regardless of race, religion, color, national origin, sex, disability, age, veteran status, and other protected status as required by applicable law.